Is playground necessary for coverage aggregation target?

Describe the feature

now coverage targets are

---------------------|---------|----------|---------|---------|-----------------------
File                 | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s     
---------------------|---------|----------|---------|---------|-----------------------
All files            |   73.91 |    83.63 |   61.29 |   73.91 |                       
 examples            |       0 |     12.5 |    12.5 |       0 |                       
  body.mjs           |       0 |        0 |       0 |       0 | 1-11                  
  error-handling.mjs |       0 |        0 |       0 |       0 | 1-13                  
  first-request.mjs  |       0 |        0 |       0 |       0 | 1-5                   
  headers.mjs        |       0 |        0 |       0 |       0 | 1-19                  
  methods.mjs        |       0 |        0 |       0 |       0 | 1-7                   
  proxy.mjs          |       0 |        0 |       0 |       0 | 1-9                   
  query-string.mjs   |       0 |        0 |       0 |       0 | 1-9                   
  type-safety.ts     |       0 |      100 |     100 |       0 | 2-21                  
 playground          |       0 |        0 |       0 |       0 |                       
  index.mjs          |       0 |        0 |       0 |       0 | 1-12                  
  index.ts           |       0 |        0 |       0 |       0 | 1-16                  
 src                 |   87.55 |    88.38 |   85.71 |   87.55 |                       
  base.ts            |     100 |      100 |     100 |     100 |                       
  error.ts           |   95.91 |    85.71 |     100 |   95.91 | 13-14                 
  fetch.ts           |   98.01 |    94.25 |    87.5 |   98.01 | 238,270-273           
  index.ts           |       0 |        0 |       0 |       0 | 1-35                  
  node.ts            |    37.5 |       25 |       0 |    37.5 | 14-35,39              
  types.ts           |       0 |        0 |       0 |       0 |                       
  utils.ts           |   93.45 |    85.36 |     100 |   93.45 | 19-20,26-27,52-53,121 
---------------------|---------|----------|---------|---------|-----------------------

but, Are examples and playground not necessary?

Additional information

• Would you be willing to help implement this feature?

Start by locating the coverage configuration and command that produce the shown report, then inspect the examples and playground directories to determine whether they are intended test targets. Run coverage with those directories included and excluded, and confirm the chosen scope produces the expected report; document or configure the result so the target is intentional.